A few quid to shut up and fùck off back to invisibility is fine. But this, as you say, is taking the pîss. Particularly when you consider the payouts they're likely to get - not to mention the endless claims of PTSD and black lung that naturally mean they can't work because reasons and end up being a burden to us all forever and ever amen.
I need to stop now. I'm just angrifying myself.